JPS63309761A - Connecting structure of intake duct - Google Patents
Connecting structure of intake ductInfo
- Publication number
- JPS63309761A JPS63309761A JP14414787A JP14414787A JPS63309761A JP S63309761 A JPS63309761 A JP S63309761A JP 14414787 A JP14414787 A JP 14414787A JP 14414787 A JP14414787 A JP 14414787A JP S63309761 A JPS63309761 A JP S63309761A
- Authority
- JP
- Japan
- Prior art keywords
- intake duct
- engagement
- projectingly
- air cleaner
- edge part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は例えば自動二輪車や自動三輪車等の車両に搭載
されるエンジンのエアクリーナに接続される吸気ダクト
の接続構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a connection structure for an intake duct connected to an air cleaner of an engine mounted on a vehicle such as a motorcycle or a tricycle.
一般にエンジンに備えられるエアクリーナにおいては、
空気中の塵埃を捕捉する作用のほか、シリンダに空気が
吸込まれる際に発生する吸気騒音が外部にもれ出てくる
のを低減する作用も重要である。そのため、従来、ゴム
製の吸気ダクトを細長く形成することによって音の出口
を絞り消音効果を高めるようにしている。また水の中を
半没状態で走行するようなこともある不整地走行車両で
は、水を吸い込まないように吸気ダクトを長くのばして
高い位置へ開口させるようにしている。すなわち、吸気
ダクトは車体の前後方向に配設され、その基端部をエア
クリーナのケースに突設した筒部に被冠させバンド部材
で締付けることによって、エアクリーナに接続されてい
る。In air cleaners that are generally installed in engines,
In addition to the function of trapping dust in the air, it is also important to reduce the intake noise generated when air is sucked into the cylinder from leaking to the outside. For this reason, conventionally, a rubber air intake duct is formed into a long and narrow shape to narrow the sound outlet and enhance the silencing effect. In addition, for off-road vehicles that sometimes drive partially submerged in water, the intake ducts are lengthened and opened at a higher position to prevent water from being sucked in. That is, the intake duct is arranged in the front-rear direction of the vehicle body, and is connected to the air cleaner by fitting its base end onto a cylindrical portion protruding from the case of the air cleaner and tightening it with a band member.
しかし、このような接続構造では、吸気ダクトは片持ち
に支持されているために、車両の走行に伴う振動・衝撃
等によって弾性変形し先端部が上下方向に振れるように
なる。このため、バンド部材で固定され弾性変形しない
部分に大きな引張応力および圧縮応力が交互に繰返し生
じるようになり、この部分において破損が起き易くなる
不具合があった。However, in such a connection structure, since the intake duct is supported in a cantilevered manner, it is elastically deformed by vibrations, shocks, etc. accompanying the running of the vehicle, and the tip portion thereof swings in the vertical direction. For this reason, large tensile stress and compressive stress alternately and repeatedly occur in a portion that is fixed by the band member and is not elastically deformed, resulting in a problem that damage is likely to occur in this portion.
本発明はこのような事情に鑑みなされたもので、吸気ダ
クトを破損しにくくすることができる吸気ダクトの接続
構造を提供するものである。本発明に係る吸気ダクトの
接続構造は、エアクリーナに突設された筒部の両側面に
側方へ突出する係止部を設けると共に、筒部に被冠され
る吸気ダクト基端部の両側に前記係止部に係止される係
止片を設けたものである。The present invention has been made in view of these circumstances, and provides an intake duct connection structure that can make the intake duct less likely to be damaged. In the intake duct connection structure according to the present invention, locking portions that protrude laterally are provided on both sides of the cylindrical portion protruding from the air cleaner, and locking portions are provided on both sides of the proximal end of the intake duct that is covered with the cylindrical portion. A locking piece that is locked to the locking portion is provided.
本発明においては、吸気ダクトの基端部は筒部に対しで
ある程度上下方向に揺動することができるので、先端部
の振れが前記揺動によって吸収され基端部に生ずる応力
が小さくなる。In the present invention, since the base end of the intake duct can swing vertically to some extent with respect to the cylindrical part, the vibration of the tip is absorbed by the swing, and the stress generated at the base end is reduced.
以下、その構成等を図に示す実施例により詳細に説明す
る。第１図は本発明に係る吸気ダクトの接続構造が実施
されたエアクリーナを示す縦断面図、第２図は第１図の
ｎ−ｎ線断面図、第３図は第２図のＩ−ＩＩＩ線断面図
、第４図はエアクリーナが備えられた自動四輪車を示す
側面図で、第４図においで符号１で示すものは車体フレ
ームを示す。Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings. FIG. 1 is a longitudinal sectional view showing an air cleaner in which the intake duct connection structure according to the present invention is implemented, FIG. 2 is a sectional view taken along the line nn in FIG. 1, and FIG. The line sectional view and FIG. 4 are side views showing a four-wheeled motor vehicle equipped with an air cleaner, and the reference numeral 1 in FIG. 4 indicates a vehicle body frame.
この車体フレーム１は車体の前後方向に延在しており、
前部には棒状の操向ハンドル２で操向される左右一対の
前輪３が配設され、後部には左右一対の後輪４が配設さ
れている。５は車体の中央部に前後方向に配設され運転
者が跨いだ状態で乗車するシートである。このシート５
は左右一対のシートピラーチューブ１ａと、左右一対の
シートレール１ｂおよびバックステーＩＣによって支持
されている。６は後輪４を駆動するエンジンであり、燃
料タンク７の下方に車体フレーム１によって支持されて
いる。８は前記後輪４を支持するリヤアーム、９はこの
リヤアーム８の上下動を吸収するクッションユニットで
ある。This vehicle body frame 1 extends in the front and back direction of the vehicle body,
A pair of left and right front wheels 3 that are steered by a rod-shaped steering handle 2 is disposed at the front, and a pair of left and right rear wheels 4 is disposed at the rear. Reference numeral 5 denotes a seat arranged in the front-rear direction in the center of the vehicle body, on which the driver rides astride. This sheet 5
is supported by a pair of left and right seat pillar tubes 1a, a pair of left and right seat rails 1b, and a backstay IC. Reference numeral 6 denotes an engine that drives the rear wheels 4, and is supported by the vehicle body frame 1 below the fuel tank 7. 8 is a rear arm that supports the rear wheel 4, and 9 is a cushion unit that absorbs the vertical movement of the rear arm 8.
１１は左右一対の後輪４の上方を覆うように車幅方向に
広く形成されシートレール１ｂ上に取付支持された合成
樹脂製のりャフェンダ、１２はこのりャフェンダ１１を
左右のシートレール１ｂ間で凹陥させることによって一
体に形成されたエアクリーナ本体である。このエアクリ
ーナ本体１２− 〇 −
は、汲上がりに傾斜した前壁１２ａと、略鉛直方向に延
在する左右の側壁および後壁１２ｂと、底部１２ｃとか
ら側面視三角形状に形成されている。Reference numeral 11 denotes a synthetic resin road fender that is formed wide in the vehicle width direction so as to cover the upper portions of the left and right rear wheels 4 and is mounted and supported on the seat rail 1b; This is an air cleaner body that is integrally formed by recessing it. The air cleaner main body 12-0- is formed into a triangular shape in side view, including a front wall 12a that slopes upward, left and right side walls and a rear wall 12b extending substantially vertically, and a bottom portion 12c.
１３は底部１２Ｃに設けられキャップ１４で開閉される
水抜孔である。前記前壁１２ａには通気孔１５が設けら
れ、ここに吸気を気化器Ｉ６に供給する吸気管１７が接
続されている。１８は前壁１２ａに通気孔１５を覆うよ
うに着脱自在に取付けられたフィルタエレメントであり
、濾過材料から開口方向に向かうにしたがって内部空間
の断面積が漸次大きくなる有底筒状に形成されている。Reference numeral 13 denotes a drain hole provided in the bottom portion 12C and opened and closed by a cap 14. A vent hole 15 is provided in the front wall 12a, and an intake pipe 17 for supplying intake air to the carburetor I6 is connected thereto. A filter element 18 is detachably attached to the front wall 12a so as to cover the ventilation hole 15, and is formed into a bottomed cylindrical shape in which the cross-sectional area of the internal space gradually increases from the filter material toward the opening. There is.
２１はエアクリーナ本体１２の上部開口を閉塞する樹脂
製の蓋体であり、この蓋体２１とエアクリーナ本体１２
とフィルタエレメント１８とはエアクリーナを構成して
いる。蓋体２１の前面には筒部２２が前方へ一体に突設
されており、筒部２２の前端部には車体の前後方向に延
びるゴム製の吸気ダクト２３がその基端部を被冠させる
ように接続されている。筒部２２は断面楕円形に形成さ
れ、両側面に側方へ突出する左右一対の係止部２４が一
体に設けられている。Reference numeral 21 denotes a resin lid that closes the upper opening of the air cleaner main body 12, and this lid 21 and the air cleaner main body 12
and filter element 18 constitute an air cleaner. A cylindrical portion 22 integrally protrudes forward on the front surface of the lid body 21, and a rubber air intake duct 23 extending in the longitudinal direction of the vehicle body covers the front end of the cylindrical portion 22 at its base end. are connected like this. The cylindrical portion 22 is formed to have an elliptical cross section, and is integrally provided with a pair of left and right locking portions 24 that protrude laterally on both sides.
追記吸気ダクト２３は筒部２２から側面視上方へ向かう
円弧状に延出され、先端はシート前部の下側において上
方へ向かって開口されている。また基端部の両側には前
記係止部２４に係止される左右一対の係止片２５が後方
へ一体に突設されている。詳述すれば係止片２５には係
止部２４が係入する係合孔２６が穿設されており、この
係合孔２６の後縁部と係止部２４の後面とが係合するこ
とによって、吸気ダクト基端部が前方へ移動するのが係
止されている。一方、吸気ダクト基端部の後方への移動
は吸気ダクト２３の内周面に形成された段差部２７に筒
部２２の前端部が当接することによって係止されている
。ここで、吸気ダクト２３の筒部２２が嵌合する部分に
は若干の締め代があり、ある程度のシール性が確保され
ている。The postscript intake duct 23 extends upward from the cylindrical portion 22 in an arcuate shape when viewed from the side, and its tip is opened upward at the lower side of the front portion of the seat. Further, on both sides of the base end, a pair of left and right locking pieces 25 that are locked to the locking portion 24 are integrally provided to protrude rearward. Specifically, the locking piece 25 has an engagement hole 26 into which the locking part 24 engages, and the rear edge of the engagement hole 26 and the rear surface of the locking part 24 engage with each other. This prevents the proximal end of the intake duct from moving forward. On the other hand, the rearward movement of the proximal end of the intake duct is stopped by the front end of the cylindrical portion 22 coming into contact with a stepped portion 27 formed on the inner peripheral surface of the intake duct 23. Here, there is a slight tightening margin in the portion of the intake duct 23 into which the cylindrical portion 22 fits, and a certain degree of sealing performance is ensured.
すなわち、この締め代を得るために係止部２４は筒部２
２の前端面からある程度離して配置されている。That is, in order to obtain this interference, the locking portion 24 is attached to the cylindrical portion 2.
It is arranged at a certain distance from the front end surface of No. 2.
なお、吸気ダクト２３の断面形状は、自然状態６一
において、その内周が筒部２２の外周よりも僅かに短く
、かつ筒部２２よりも円形に近い形状であるのが好まし
い。The cross-sectional shape of the intake duct 23 is preferably such that the inner circumference thereof is slightly shorter than the outer circumference of the cylindrical portion 22 and the cross-sectional shape is closer to a circle than the cylindrical portion 22 in the natural state 61.
このように構成された吸気ダクトの接続構造が実施され
たエアクリーナにおいては、吸気ダクト２３はその基端
部を蓋体２１の筒部２２に被冠させ、係止片２５を手で
持って後方へ引っ張り、係合孔２６に係止部２４を係合
させると、前後方向への移動が係止されるようになり筒
部２２に接続される。したがって、外気は吸気ダクト２
３から吸い込まれてフィルタエレメント１８で濾過され
た後に喋気管１７を介してエンジン６に吸引される。In the air cleaner in which the intake duct connection structure configured as described above is implemented, the intake duct 23 has its base end covered with the cylindrical part 22 of the lid body 21, and is moved rearward by holding the locking piece 25 with the hand. When the locking portion 24 is pulled to engage the locking portion 24 with the locking hole 26, movement in the front and back direction is locked and connected to the cylindrical portion 22. Therefore, the outside air flows through the intake duct 2
3 and filtered by the filter element 18 , and then sucked into the engine 6 via the air pipe 17 .
また、吸気ダクト２３はその両側部を係止することによ
って筒部２２に接続されているために、吸気ダクト２３
の基端部は筒部２２に対して係止部２４を支点としであ
る程度上下方向に揺動することができる。したがって、
吸気ダクト２３は車両の走行に伴う振動・衝撃あるいは
エンジンの振動によって先端部が上下に振れることがあ
っても、この先端部の振れを前記揺動によって吸収する
ことができる。その結果、基端部に生ずる圧縮応力や引
張応力を小さくすることができるから、基端部を固定的
に接続する従来の構造に比較して破損しにくくすること
ができる。In addition, since the intake duct 23 is connected to the cylindrical portion 22 by locking both sides thereof, the intake duct 23
The base end portion of can swing vertically to some extent with respect to the cylindrical portion 22 using the locking portion 24 as a fulcrum. therefore,
Even if the tip of the intake duct 23 swings up and down due to vibrations and shocks caused by the running of the vehicle or vibrations of the engine, this swing of the tip can be absorbed by the swinging. As a result, compressive stress and tensile stress occurring at the proximal end can be reduced, making it less likely to be damaged compared to a conventional structure in which the proximal end is fixedly connected.
なお上記実施例においては、エアクリーナ本体１２かり
ャフエンダ１１と一体的に形成された例について説明し
たが本発明はこれに限定されるものでなく、リヤフェン
ダ１１と別体に形成されたエアクリーナに実施すること
ができる。In the above embodiment, an example was explained in which the air cleaner main body 12 was formed integrally with the rear fender 11, but the present invention is not limited to this, and may be implemented in an air cleaner formed separately from the rear fender 11. be able to.
以上説明したように本発明によれば、エアクリーナに突
設された筒部の両側面に側方へ突出する係止部を設ける
と共に、筒部に被冠される吸気ダクト基端部の両側に前
記係止部に係止される係止片を設けたから、吸気ダクト
の基端部は筒部に対しである程度上下方向に揺動するこ
とができるようになる。As explained above, according to the present invention, locking portions protruding laterally are provided on both sides of the cylindrical portion protruding from the air cleaner, and locking portions protruding laterally are provided on both sides of the proximal end of the intake duct that is covered with the cylindrical portion. Since the locking piece that is locked to the locking portion is provided, the base end portion of the intake duct can swing vertically to some extent with respect to the cylindrical portion.
したがって、基端部は前記揺動によって先端部の振れを
吸収し、基端部に生ずる応力を小さくす−’ｆ −
ることができるから、吸気ダクトを破損しにくくするこ
とができる。また、係止片を係止部に係止させることに
よって、吸気ダクトをエアクリ−すに接続することがで
き、なんら特別な工具を必要としないから、接続作業が
容易になる利点もある。Therefore, the proximal end can absorb the vibration of the distal end due to the rocking and reduce the stress generated at the proximal end, making it difficult for the intake duct to be damaged. Further, by locking the locking piece to the locking portion, the intake duct can be connected to the air cleaner, and no special tools are required, so there is an advantage that the connection work is facilitated.
第１図は本発明に係る吸気ダクトの接続構造が実施され
たエアクリーナを示す縦断面図、第２図は第１図のｎ−
ｎ線断面図、第３図は第２図の■−■線断面図、第４図
はエアクリーナが備えられた自動四輪車を示す側面図で
ある。
１１・・・・リヤフェンダ、１２・・・・エアクリ−す
本体、２１・・・・蓋体、２２・・・・筒部、２３・・
・・吸気ダクト、２４・・・・係止部、２５・・・・係
止片。FIG. 1 is a longitudinal cross-sectional view showing an air cleaner in which the intake duct connection structure according to the present invention is implemented, and FIG.
3 is a cross-sectional view taken along the line ■--■ in FIG. 2, and FIG. 4 is a side view showing a four-wheeled motor vehicle equipped with an air cleaner. 11... Rear fender, 12... Air cleaner body, 21... Lid body, 22... Cylinder part, 23...
...Intake duct, 24...Locking portion, 25...Locking piece.
Claims (1)
ーナに接続する構造において、エアクリーナに突設され
前記吸気ダクトの基端部が被冠される筒部の両側面に側
方へ突出する係止部を設けると共に、吸気ダクトの両側
に前記係止部に係止される係止片を設けてなる吸気ダク
トの接続構造。In a structure in which a rubber intake duct extending in the longitudinal direction of a vehicle body is connected to an air cleaner, a locking part that projects laterally on both sides of a cylindrical part that protrudes from the air cleaner and is crowned with a base end of the intake duct. What is claimed is: 1. An intake duct connection structure comprising: a locking piece that is locked to the locking portion on both sides of the intake duct;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14414787A JPS63309761A (en) | 1987-06-11 | 1987-06-11 | Connecting structure of intake duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14414787A JPS63309761A (en) | 1987-06-11 | 1987-06-11 | Connecting structure of intake duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63309761A true JPS63309761A (en) | 1988-12-16 |
Family
ID=15355309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14414787A Pending JPS63309761A (en) | 1987-06-11 | 1987-06-11 | Connecting structure of intake duct |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63309761A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5330028A (en) * | 1991-10-11 | 1994-07-19 | Honda Giken Kogyo Kabushiki Kaisha | Saddle-riding type vehicle |
| KR100520231B1 (en) * | 2002-06-25 | 2005-10-11 | 쌍용자동차 주식회사 | Air duct of air cleaner for automobiles |
| KR100521555B1 (en) * | 2002-07-19 | 2005-10-17 | 현대자동차주식회사 | Mounting apparatus for air duct |
| JP2019060271A (en) * | 2017-09-26 | 2019-04-18 | トヨタ自動車株式会社 | Air cleaner duct assembly structure |
| JP2021092195A (en) * | 2019-12-11 | 2021-06-17 | 川崎重工業株式会社 | Ram duct of vehicle |
-
1987
- 1987-06-11 JP JP14414787A patent/JPS63309761A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5330028A (en) * | 1991-10-11 | 1994-07-19 | Honda Giken Kogyo Kabushiki Kaisha | Saddle-riding type vehicle |
| KR100520231B1 (en) * | 2002-06-25 | 2005-10-11 | 쌍용자동차 주식회사 | Air duct of air cleaner for automobiles |
| KR100521555B1 (en) * | 2002-07-19 | 2005-10-17 | 현대자동차주식회사 | Mounting apparatus for air duct |
| JP2019060271A (en) * | 2017-09-26 | 2019-04-18 | トヨタ自動車株式会社 | Air cleaner duct assembly structure |
| JP2021092195A (en) * | 2019-12-11 | 2021-06-17 | 川崎重工業株式会社 | Ram duct of vehicle |
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